AEM Electrolyzers in India

Products

HAEM-500 — AEM Electrolyzer

Compact bench-top anion exchange membrane electrolyzer. 500 mL/min hydrogen output at 99.99% purity. Single phase AC, 4 bar outlet, dilute KOH electrolyte.

Lead time: 3–5 weeks

Specifications

Flow Rate500 mL/min

Output Pressure4 bar

Hydrogen Purity99.99%

Power SupplySingle Phase AC

Rated Power<300 W

Dimensions420 × 242 × 353 mm

Weight14 kg

CoolingAir cooled

ElectrolyteDilute KOH solution (~1%)

What is an AEM Electrolyzer?

An anion exchange membrane electrolyzer produces hydrogen by splitting water using electrical energy and a solid anion exchange membrane as the ion transport medium. At the anode, water is oxidised to release oxygen and hydroxide ions. These hydroxide ions migrate through the anion exchange membrane to the cathode, where they are reduced to produce high-purity hydrogen gas.

Anion exchange membrane electrolyzers use a dilute potassium hydroxide (KOH) solution — typically around 1% concentration — as the electrolyte medium. This is significantly lower than the 25–30% KOH concentration used in conventional alkaline electrolyzers, reducing corrosion risk, simplifying electrolyte management, and extending the service life of system components. The solid anion exchange membrane handles ion transport, while the dilute KOH provides the ionic conductivity required for efficient electrolysis.

The key advantage of anion exchange membrane technology is its combination of solid membrane operation with non-precious metal catalysts. PEM electrolyzers require platinum group metals — primarily iridium at the anode — which represent a significant material cost. Anion exchange membrane electrolyzers can use non-precious transition metal catalysts, reducing the cost of the electrochemical core while maintaining comparable output purity and compact system architecture.

Anion exchange membrane electrolyzers produce hydrogen at 99.99% purity directly at the outlet — suitable for gas chromatography carrier gas, analytical instrument supply, and fuel cell applications without additional purification in most cases. Hydrogenergy supplies anion exchange membrane electrolyzers in compact bench-top format for laboratory and analytical applications, and in higher-capacity high-pressure configurations for industrial hydrogen generation.

Applications

Gas chromatography carrier and fuel gas supply

Analytical instrument hydrogen supply

Fuel cell test bench hydrogen generation

Hydrogen safety and sensor calibration

Industrial on-site hydrogen generation

AEM membrane and electrode research

Energy storage and power-to-gas demonstration

Frequently asked questions

How does an anion exchange membrane electrolyzer differ from a PEM electrolyzer?

Both technologies use a solid membrane, but they transport different ions. PEM electrolyzers transport protons (H⁺) through a proton exchange membrane and require platinum group metal catalysts — particularly iridium at the anode. Anion exchange membrane electrolyzers transport hydroxide ions (OH⁻) through a solid anion exchange membrane and can use non-precious metal catalysts, reducing material cost. Both produce high-purity hydrogen at the cathode and operate without the bulk liquid electrolyte management of conventional alkaline systems.

How does an anion exchange membrane electrolyzer differ from an alkaline electrolyzer?

Conventional alkaline electrolyzers use a 25–30% potassium hydroxide solution as the electrolyte, transported through a porous diaphragm. This high KOH concentration requires careful electrolyte management, corrosion-resistant materials throughout the system, and regular concentration monitoring. Anion exchange membrane electrolyzers use a dilute KOH solution at around 1% concentration alongside a solid anion exchange membrane — significantly simplifying electrolyte handling while retaining the non-precious metal catalyst advantage of alkaline chemistry.

What electrolyte do anion exchange membrane electrolyzers use?

Anion exchange membrane electrolyzers use a dilute potassium hydroxide (KOH) solution — typically around 1% concentration — as the electrolyte medium. This is far lower than the 25–30% KOH used in conventional alkaline electrolyzers. The solid anion exchange membrane transports hydroxide ions through this dilute solution, combining membrane-based ion transport with low-concentration electrolyte chemistry. Electrolyte replenishment requirements are minimal compared to conventional alkaline systems.

What hydrogen purity do anion exchange membrane electrolyzers produce?

Anion exchange membrane electrolyzers produce hydrogen at 99.99% purity at the outlet under normal operating conditions — suitable for gas chromatography carrier gas, analytical instrument supply, and most fuel cell testing applications without additional purification. For applications requiring 99.999% (5N grade), a downstream desiccant dryer is recommended.

What water quality is required for anion exchange membrane electrolyzers?

Anion exchange membrane electrolyzers have lower water quality requirements than PEM systems. Deionised or demineralised water is recommended — typically with conductivity below 2 µS/cm. Tap water is not suitable as dissolved ions interfere with the dilute KOH electrolyte and can degrade membrane performance over time. Contact Hydrogenergy for specific water quality requirements for each model.

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